Among different approaches that can be considered for concrete rehabilitation, bonded overlays are often the most economical alternative. The primary purpose of overlays is to extend the life of the candidate structures, either by restoring the quality and integrity of the surface and/or the re-establishing or improving the load-carrying capacity. Nevertheless, the durability of bonded overlay systems still draws concerns in the technical community because of bond sustainability problems encountered in a number of cases. At this time, there is still no accepted design approach or methodology that can warrant the practitioner a successful outcome of the repair. This State-of-Art report summarizes the findings with respect to all aspects involved in the overlaying process.
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Roofs and roofing. Performance, diagnosis, maintenance, repair and the avoidance of defects. 3rd edition
Author: Harrison, H. W., Trotman, P. M. and Saunders, G. K. | Size: 7.68 MB | Format:PDF | Year: 2009 | pages: 284 | ISBN: 9781848060920
Abstract
Draws attention to the quality of construction of roofs and roofing which is necessary to ensure good performance of the fabric for the defined life of the building, and to underline potential problems and how to avoid them. Addresses provisions to accommodate climate change. Considers lightweight green roofs, modern methods of construction, roof-mounted photovoltaic systems, thermal insulation in lofts, loft conversions and single-layer membranes. Covers metal roofing, siphonic roof drainage, new materials technologies, and finishes. Relates all roofs’ basic functions.
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Cullen is the market leader of timber engineering connectors within the UK and Ireland, currently holding 85% of the timber frame market, 55% of the roof truss and engineered floors markets. Our experienced Research and Development Team develop 10 cutting-edge products every year. This is why Cullen is the number one choice for timber connectors.
Our connectors
Cullen Building Products manufacture a range of timber engineering connectors for the following applications:
Timber to masonry connections
Timber frame connections
Engineered wood product (EWP) connections including products for all I-joist and open web system manufacturers
Solid timber & roof truss connections
Truss to wallplate connection including high load applications
Multiple connections for floors and roofs
Restraint straps for masonry and timber frame connections
Ancillary products
Custom connectors
Cullen are specialists in the design, development & manufacture of special connectors, and products to assist with disproportionate collapse in multi-storey timber frame buildings. Corrosion protection to the mild steel is by galvanising to Z275 & Z600. Timber frame wall ties and holding down straps are manufactured with austenitic stainless steel and supplied with the required fixings. Cullen products carry BBA certification and European Technical Approvals.
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Practical guide to structural robustness and disproportionate collapse in building
Size: 4.81 MB | Format:PDF | Publisher: the institute of structure engineers | Year: 2010 | pages: 80 | ISBN: 9781906335175
Abstract
To improve information relating to structural robustness and application of building regulations requirements, covering concepts, legal and other obligations and looks at regulations and codes of practice.
Subject(s)
Building structure
Walls/masonry/cavity walls
Materials
Bricks/blocks
Concrete blocks
Special subject areas
Structural/mechanical factors
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The Effect Measured of the Rubber Membrane on the Triaxial Compression Strength of Clay Samples
Authors: D. J. Henkel; G. D. Gilbert
Source: Géotechnique, Volume 3, Issue 1, pages 20 –29 , ISSN: 0016-8505, E-ISSN: 1751-7656
Size: 702 KB | Format:PDF
Here it is:
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This part of ISO 22965 applies to concrete for structures cast in situ, pre-cast structures and structural pre-cast products for buildings and civil engineering structures. The concrete can be mixed on site, ready-mixed concrete or produced in a plant for pre-cast concrete products.
This part of ISO 22965 applies to concrete compacted to retain no appreciable amount of entrapped air other than entrained air and to normal-weight, heavy-weight and light-weight concrete. Other International Standards for specific products, e.g. pre-cast products, or for processes within the field of the scope of this standard can require or permit deviations from this part of ISO 22965. This part of ISO 22965 specifies the properties of constituent materials, the production of concrete and the compliance system of concrete.
This part of ISO 22965 does not apply to:
⎯ concrete with a maximum aggregate size equal to or less than 4 mm or 5 mm (mortar),
⎯ aerated concrete,
⎯ foamed concrete,
⎯ concrete with an open structure (“no-fine aggregate” concrete),
⎯ concrete with a density less than 800 kg/m3,
⎯ refractory concrete.
This part of ISO 22965 does not cover health and safety requirements for the protection of workers during production and delivery of concrete.
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This publication provides a Worked Example for the design of a single-span fully integral bridge, that utilises High Modulus Pile abutments and a composite plate girder deck. It has been based on the findings of studies undertaken on steel integral bridges and steel substructures by The Steel Construction Institute since 1993.
Calculations are provided for each design stage, together with a detailed commentary explaining the background to the methods employed and the parameters chosen. Computer-based numerical techniques have been used to enable full soil-structure interaction to be considered in the analysis. A design is proposed for a reinforced concrete capping beam to provide a full moment connection between the High Modulus Piles and the deck.
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I have Canon iR2018 connected on my work network.
Can I scan a multiple page documents (eg. books) and transfer the scanned file(s) to a network connected PC?
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